diff --git a/插件库/Lskj.Util/ImageHelper.cs b/插件库/Lskj.Util/ImageHelper.cs
index f31a754..9412bcd 100644
--- a/插件库/Lskj.Util/ImageHelper.cs
+++ b/插件库/Lskj.Util/ImageHelper.cs
@@ -36,10 +36,9 @@ namespace Lskj.Util
             {
                 if (bytes == null) return null;
                 using (System.IO.MemoryStream ms = new System.IO.MemoryStream(bytes))
+                using (System.Drawing.Image sourceImage = System.Drawing.Image.FromStream(ms))
                 {
-                    System.Drawing.Image returnImage = System.Drawing.Image.FromStream(ms);
-                    ms.Flush();
-                    return returnImage;
+                    return new Bitmap(sourceImage);
                 }
             }
             catch (Exception)
@@ -56,14 +55,9 @@ namespace Lskj.Util
         {
             try
             {
-                FileStream fs = File.OpenRead(path); //OpenRead
-                int filelength = 0;
-                filelength = (int)fs.Length; //获得文件长度 
-                Byte[] image = new Byte[filelength]; //建立一个字节数组 
-                fs.Read(image, 0, filelength); //按字节流读取 
-                System.Drawing.Image result = System.Drawing.Image.FromStream(fs);
-                fs.Close();
-                return result;
+                if (string.IsNullOrWhiteSpace(path) || !File.Exists(path)) return null;
+                byte[] image = File.ReadAllBytes(path);
+                return ReadImage(image);
             }
             catch (Exception)
             {
diff --git a/插件库/Lskj.Util/PubUtil.cs b/插件库/Lskj.Util/PubUtil.cs
index eca0daf..5c604d9 100644
--- a/插件库/Lskj.Util/PubUtil.cs
+++ b/插件库/Lskj.Util/PubUtil.cs
@@ -203,6 +203,21 @@ namespace Lskj.Util
         {
             get { return BitMapPath + "Main/Module/"; }
         }
+        /// <summary>
+        /// 主界面左侧树图标路径
+        /// </summary>
+        public static string MainTreeviewImagePath
+        {
+            get
+            {
+                string path = BitMapPath + "Main\\MainTreeview\\";
+                if (!Directory.Exists(path))
+                {
+                    Directory.CreateDirectory(path);
+                }
+                return path;
+            }
+        }
         public static string MesItemImage
         {
             get { return BitMapPath + "MesItem/"; }